code: def _test_publish(self):
      marketplace = Marketplace()
      datadir = "/Users/fredfortier/Downloads/marketcap_test_single"
      marketplace.publish("marketcap1234", datadir, False)
      pass
  
file_path: catalyst/tests/marketplace/test_marketplace.py
imports: from catalyst.marketplace.marketplace import Marketplace
  from catalyst.testing.fixtures import WithLogger, CatalystTestCase
label_desc: Use image node_id 5 for calling the TestMarketplace obj's underlying member method code with example usage: obj._test_publish() without return types